← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 145 · 40 sums
TalentJR

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

NameDateTime takenScore ___ / 40
  1. 1.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 63°. What is the angle next to it on the same line (in degrees)?
  3. 3.What is the supplement of 37° (in degrees)?
  4. 4.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 159° (in degrees)?
  6. 6.Are 79° and 11° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two straight lines cross each other. One of the angles formed is 30°. What is the angle next to it on the same line (in degrees)?
  8. 8.What is the complement of 38° (in degrees)?
  9. 9.What is the complement of 39° (in degrees)?
  10. 10.Are 15° and 45° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 91°. What is the angle next to it on the same line (in degrees)?
  13. 13.What is the complement of 30° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 106°. What is its corresponding angle (in degrees)?
  17. 17.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 39° (in degrees)?
  19. 19.What is the supplement of 99° (in degrees)?
  20. 20.Are 55° and 35° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  21. 21.What is the supplement of 36° (in degrees)?
  22. 22.What is the supplement of 7° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 115°. What is its corresponding angle (in degrees)?
  24. 24.What is the complement of 15° (in degrees)?
  25. 25.What is the complement of 79° (in degrees)?
  26. 26.What is the supplement of 14° (in degrees)?
  27. 27.What is the supplement of 61° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 58°. What is its corresponding angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 134°. What is its corresponding angle (in degrees)?
  33. 33.What is the complement of 31° (in degrees)?
  34. 34.What is the complement of 68° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its alternate interior angle (in degrees)?
  36. 36.What is the complement of 51° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its alternate interior angle (in degrees)?
  38. 38.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 85° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 27
  2. 117
  3. 143
  4. 65
  5. 21
  6. Complementary
  7. 150
  8. 52
  9. 51
  10. Neither
  11. 48
  12. 89
  13. 60
  14. 117
  15. 127
  16. 106
  17. 143
  18. 141
  19. 81
  20. Complementary
  21. 144
  22. 173
  23. 115
  24. 75
  25. 11
  26. 166
  27. 119
  28. 41
  29. 149
  30. 71
  31. 58
  32. 134
  33. 59
  34. 22
  35. 129
  36. 39
  37. 109
  38. 62
  39. 5
  40. 130

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets